Not my kitchen but same layout.The sink is opposite the fridge.Currently I have no walls just studs left over from demo.Access to water from below will be more difficult.My thinking is to run the feed line up along a stud then across the top next to the joist then down the wall where the fridge is and stop half way down.Is this a good run? Any code violations about running across joists?Located in NYC.Any advice is appreciated.
I'm not sure if it's a code violiation where you're at, can't think why it would be, but I've done nearly what you're suggesting.
I'd use 3/8 pex and reduce it at the fridge for improved water flow. I know it doesn't sound like it would make a difference, but it does.